Definicja length

Co znaczy:

A property of a relation between two business objects, which comprises the number of objects required to complete the relation between the source and target objects. The length is equal to the total number of objects in the relation minus 1.

Therefore, a direct foreign key relation between objects A and B has a length of 2. A relation requiring 5 objects to connect A to B, including A and B, has a length of 4.